iClient WebGL开启ScanEffect扫描线效果显示问题?

0 投票

使用产品:iserver 10i

操作系统:win7 x64

数据类型:文件型

问题详细描述:使用ScanEffect开启扫描线效果后,只有扫描线经过的区域是亮的,其他区域是黑的。我是在http://support.supermap.com.cn:8090/webgl/examples/editor.html#scanEffect这个示例程序上进行修改,我把颜色校正、泛光和景深的选项都去掉了,只是想实现扫描线的效果。以下是我修改后的代码:

<!DOCTYPE html>
<head>
    <meta charset="utf-8">
    <title>扫描效果</title>
    <link href="../Build/Cesium/Widgets/widgets.css" rel="stylesheet">
    <link href="./css/pretty.css" rel="stylesheet">
    <script type="text/javascript" src="./js/jquery.min.js"></script>
    <script src="./js/config.js"></script>
    <script src="./js/tooltip.js"></script>
    <script src="./js/spectrum.js"></script>
    <script type="text/javascript" src="./js/require.min.js" data-main="js/main"></script>
</head>
<body>
<div id="cesiumContainer"></div>
<div class="params-setting-container">
    <div class="params-setting-anchor" title="显示/隐藏参数面板"><span class="fui-expand"></span></div>
    <div class="params-setting">
        <div class="param-item">
            <label for="scanShow">开启扫描</label>
            <input type="checkbox" id="scanShow">
        </div>
       
        <div class="param-item">
            <label>扫描颜色</label>
            <input type="text" id="scan-color"/>
        </div>
        
    </div>
</div>
<script>
    function onload(Cesium) {

        $(".params-setting-anchor").click(function(){
            $(".params-setting").toggleClass("params-setting-hide");
        });

        var viewer = new Cesium.Viewer('cesiumContainer',{
            infobox:false
        });
        viewer.imageryLayers.addImageryProvider(new Cesium.BingMapsImageryProvider({
            url : 'https://dev.virtualearth.net',
            mapStyle : Cesium.BingMapsStyle.AERIAL,
            key : URL_CONFIG.BING_MAP_KEY
        }));

        var scene = viewer.scene;
        scene.fxaa = true;
        scene.skyAtmosphere.show = false;

        var promise = scene.open(URL_CONFIG.SCENE_CBD);
        Cesium.when(promise,function(layers){
            var tooltip = createTooltip(document.body);
            var tooltipMsg = "";
            var clickCount = 0;
            var refLayer = layers[0];
            //设置相机位置,定位至模型
            scene.camera.setView({
                destination : new Cesium.Cartesian3(-2180733.097675902, 4379639.149392802, 4092613.146140101),
                orientation:{
                    heading: 4.419871112141432,
                    pitch: -0.40767078314183536,
                    roll: 1.0658141036401503e-14
                }
            });
			
			// 初始化颜色选择控件
            var initialScanColor = "#2263e6";
            viewer.scene.scanEffect.color = Cesium.Color.fromCssColorString(initialScanColor);
            $("#scan-color").spectrum({
                color: initialScanColor,
                chooseText: "确定",
                cancelText: "取消",
                showAlpha: true,
                change: function(color){
                    var colorObj = color.toRgb();
                    viewer.scene.scanEffect.color = new Cesium.Color(colorObj.r / 255, colorObj.g / 255, colorObj.b /255, colorObj.a);
                }
            });
			
            $("#scanShow").on("input change",function(){
                viewer.scene.scanEffect.show = this.checked;
                var pos = new Cesium.Cartesian3.fromDegrees(refLayer.lon,refLayer.lat,10.0);
                viewer.scene.scanEffect.centerPostion = pos;
				viewer.scene.scanEffect.mode = Cesium.ScanEffectMode.CIRCLE;
				viewer.scene.scanEffect.period = 5;
				viewer.scene.scanEffect.speed = 100;
            });
        });
    }
</script>
</body>

       以下是刚初始加载模型和开启扫描线的效果对比截图:

        请问一下,怎样可以设置在原有模型的基础上开启扫描线,而不是像这样周围都是黑的吗?

1月 19 分类:  110次浏览 | 用户: 君莫笑 初出茅庐 (28 分)

1个回答

0 投票

您好,用你的代码在官网demo中测试并未出现图中所示问题,更新一下电脑的显卡驱动试试呢

1月 19 用户: 杨义东 学富五车 (579 分)
您好,确实是我电脑的问题,之前别的示例都能运行,也就没往这个方向考虑,走了不少弯路,多谢了!
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